Question: 1. Consider the following relation. B D C102 C102 C100 C103 C101 C105 4772 4772 7642 4678 6742 7456 ZAN CLR PCN TYL ASP

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1. Consider the following relation. B D C102 C102 C100 C103 C101 C105 4772 4772 7642 4678 6742 7456 ZAN CLR PCN TYL ASP CLR 2 2 3 2 2 2 What is (are) the sureskex(3) candidate key(s) for the relation shown above? Please show your answer using the following table. Candidate Key Superkey B D (A,B) (A,C) (A.D) (B.C) (B.D) (CD) (ABC) (A,B,D) (A,C,D) (B,C,D) (A,B,C,D) 2. Circle each valid functional dependency. A ---->B A--->C A----->D B-C B -->D C--->D (A,B) ---> (A,B) -->D (B,C) ----->D

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